Can a Single-Wavelength transmit at 600Gbps?

Can a Single-wavelength do transmission at a speed of 600Gbps? We have been talking about commecial deployment of optical networks that are designed to transmit at a speed of 100Gbps. The developments are quick in the field of fiber optics. Now CITIC Networks in partnership with Huawei made a successful commercial implementation of Single-Wavelength 600G network in Beijing.

The practical implementation of 600G netowrks show the real-life application of the laboratory experiments. CITIC and Huawei jointly demonstrated that th theoretical high-speed transmission shown demonstrated so far in laboratories can be fully realized on the live networks.

The high-speed transmission, made possible by overcoming the traditional limitations of physical channels, achieves best performance in the industry. The developments in high-speed transmission will greatly contribute to China’s Internet services that have flourished in recent years.

Users producing rich video content, which requires substantial storage space is on rise in not only in China, but also in almost every part of the world.

The cloudification trend has seen video information move into data centers; this has caused CITIC Networks’s traffic to grow rapidly, reducing the duration of capacity expansion periods and causing capacity bottlenecks on optical fiber networks to be reached more quickly. Improving single-wavelength bandwidth, therefore, became an efficient solution to broaden transmission capacity.

Huawei in a statement revealed that the main bottleneck of 600G transmission is the distance achieved. In lab tests, the results for 600G were close to the Shannon limit;. However, system performance is always lower on a live network due to the limitations imposed by the physical channels.

In working with CITIC Networks to pioneer 600G commercialization, Huawei brought three core technological advantages to the table in an effort to maximize the transmission distance even on the live network;

Unique and proprietary algorithm chips
In the process of developing successive generations of proprietary oDSP chips, Huawei has accumulated numerous powerful algorithms, a technological advantage which has helped Huawei maintain market leadership in the fields of 100G, 200G, and 400G ultra-high-speed optical transmission.

Huawei’s 600G solution underlying the sixth-generation oDSP chips introduces series of powerful algorithms – advanced nonlinear compensation, high-precision adaptive component damage compensation, and crosstalk elimination to improve encoding efficiency and help achieve 64QAM modulation.

Channel-Matched Shaping (CMS)
Huawei’s unique CMS technology detects the transmission effect on physical channels, obtains channel impairment model information and physical transmission link status, and optimizes transmission performance through shaping, compression, compensation, and error correction, thereby maximizing the transmission capacity and distance in physical environments. The results are industry-leading transmission performance. reduced per-bit transmission cost, saved number of relay sites, and reduced CAPEX for customers.

Optical-layer AI neuron technology.
Optical-layer AI Neuron Modules Optimize Network-wide Performance and Improve Reliability

Embedded AI neuron modules quickly mark all optical-layer parameters on the network in real time, implementing independent optimization, active protection, and early warning capabilities on optical networks while improving 600G network performance and reliability.

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